Makings of a Warrior

At the beginning of your end step, you may sacrifice a creature you control. If you do, put a +1+1 counter on target creature you control and it becomes a Warrior in addition to its other types.
If you control five or more Warriors, creatures you control gain trample.
"She lost almost everything she cared about in that siege. Since then she's vowed to never to see that happen to those she has left."
- Witness to Eria's rise.